The association aims to promote the use of public transport in the international Lake Constance region. Public transport (PT) is to develop into a pillar of the overall mobility system in the Lake Constance region for cross-border mobility and make a contribution to the modal shift from motorized individual transport to public transport. The association performs coordination tasks across national or organizational borders and can be commissioned to offer and create products as well as projects and provide related services. The association can undertake financing for its own or third-party account and provide guarantees and sureties for third parties, provided this is in line with the resolutions of the general meeting of shareholders. The association is not profit-oriented.